Complete Guide to 1999 Acura Integra Suspension Parts: OEM vs Aftermarket Options

If you own a 1999 Acura Integra, keeping the suspension in top shape is key to maintaining that legendary handling. Whether you're restoring a classic, upgrading for performance, or just replacing worn components, choosing the right suspension parts can make a big difference. This guide covers the main suspension components—struts, shocks, springs, control arms, bushings, and sway bars—and helps you decide between OEM and aftermarket options.

Understanding Your 1999 Acura Integra Suspension System

The Integra uses a double-wishbone front and rear suspension design, known for excellent handling and ride quality. The main parts to consider:

Struts vs. Shocks

Technically, the Integra uses struts in the front (MacPherson-type) and shocks in the rear. Many people use the terms interchangeably, but the front strut assembly includes the spring seat and bearing mount. Rear shocks are separate from the spring.

Coil Springs

Factory springs are designed for comfort and moderate handling. Aftermarket lowering springs reduce ride height and improve cornering but give a firmer ride.

Control Arms and Bushings

The front lower control arms (LCA) and rear trailing arms have rubber bushings that wear over time. Upgrading to polyurethane bushings reduces flex and sharpens response.

Sway Bars (Anti-Roll Bars)

Front and rear sway bars connect left and right wheels to reduce body roll. Thicker aftermarket bars improve balance.

OEM vs Aftermarket Suspension Parts

OEM (Original Equipment Manufacturer) Parts

• Pros: Guaranteed fit, factory ride quality, long life (usually 80k–100k miles).
• Cons: Higher price, no performance improvement, may still have rubber bushings that wear faster.
• When to choose: Daily driver, comfort priority, or if you want maintenance replacement without changes.

Aftermarket Performance Parts

Brands like Koni, Tokico, Eibach, H&R, Skunk2, and Energy Suspension offer options.

• Pros: Adjustable damping (some), lower stance, stiffer springs, better handling, often cheaper than OEM for comparable quality.
• Cons: Harsher ride, potential fitment issues (rare), need to replace more parts together for best results.
• When to choose: Enthusiast, weekend track car, or want to refresh with improved feel.

Key Suspension Parts for the 1999 Acura Integra

Front Strut Assembly

For a direct replacement, consider complete quick-struts (like Monroe or KYB) that come with new springs and mounts. For performance, OEM-style replacement struts (KYB Excel-G) or adjustable (Koni Yellow) with aftermarket springs.

Rear Shocks

OEM replacement: KYB Excel-G (gas-a-just). Performance: Koni Sport adjustable, Tokico Illumina adjustable. Pair with stock or lowering springs.

Springs

• Stock height: Moog or OEM replacement. Good for comfort.
• Lowering springs: Eibach Pro-Kit (1.2 inch drop, progressive), H&R Sport (1.5 inch drop, linear). Pair with matched shocks.
• Coilovers: Ground Control or Skunk2 coilover sleeves (if you keep OEM shocks) or full coilovers (like BC Racing, Tein Street Advance) which include threaded spring perches and dampers.

Control Arms and Bushings

Front lower control arms: OEM or aftermarket like Moog. If bushing worn, replacing the whole arm is easier than pressing bushings. For performance, Energy Suspension polyurethane bushing kit (for front LCA and rear trailing arm). Note: Polyurethane adds vibration.

Sway Bars

Stock sway bars are 20mm front, 16mm rear. A popular upgrade is a 22mm front and 19mm rear from the Integra Type R or aftermarket (Eibach, Progress, Whiteline). Also consider new end links (Moog or Energy).

Installation and Compatibility Tips

• Most suspension bolts require torquing with the car on the ground (suspension loaded).
• After alignment is mandatory after any suspension change.
• If lowering more than 1.5 inches, you may need camber kit (like SPC or Ingalls) to correct alignment.
• 1998–2001 Integra parts are generally interchangeable, but verify with fitment guides.

Cost Overview

• Front strut assembly (quick-strut): $100–$200 each
• Rear shock: $50–$150 each
• Lowering springs: $150–$350 per set
• Full coilovers: $500–$1500 per set
• Control arms (front each): $40–$100
• Poly bushing kit: $100–$200
• Sway bar pair: $200–$400
• Installation labor: $400–$800 for full suspension (if not DIY)

Practical Buying Advice

• For a daily driver with high miles, replace all four shocks/struts at once with OEM or KYB Excel-G. Keep springs if not sagging.
• For a weekend warrior, get Koni Sport shocks with Eibach Pro-Kit springs. That combination feels firm but not harsh.
• For auto-x or track, consider full coilovers (e.g., BC Racing ER series) with adjustable damping and camber plates.
• Check bushings: If control arm bushings are cracked, poly upgrade can tighten the feel without the cost of spherical bearings.
• Always replace strut mounts and bump stops when doing struts (OEM or aftermarket).

Conclusion and Final Recommendation

For most 1999 Acura Integra owners, a balanced setup works best: replace worn shocks/struts with KYB Excel-G (OEM-like) and pair with Eibach Pro-Kit lowering springs for a mild drop and improved handling. Add new front lower control arms (Moog) and poly bushings in the rear only if you want extra precision. This setup costs around $600–$800 in parts and transforms the car without making it uncomfortable. If money is tight, stick with OEM replacement parts and refresh the bushings. Avoid cheap no-name coilovers—they will compromise ride quality and durability.